Isotypic heterojunction based on Fe-doped and terephthalaldehyde-modified carbon nitride for improving photocatalytic degradation with simultaneous hydrogen production

Fe-CN/NTE improved degradation of 4-NP coupled with simultaneous photocatalytic H2 evolution under visible light irradiation. [Display omitted] To achieve an efficient photocatalytic for clean energy production and environmental remediation, the highly active Fe-doped and terephthalaldehyde-modified...

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Bibliographic Details
Published in:Chinese chemical letters 2021-09, Vol.32 (9), p.2782-2786
Main Authors: Jiang, Xun-Heng, Yu, Fan, Wu, Dai-She, Tian, Lei, Zheng, Ling-Ling, Chen, Li-Sha, Chen, Peng, Zhang, Long-Shuai, Zeng, Hui, Chen, Ying, Zou, Jian-Ping
Format: Article
Language:English
Subjects:
Carbon nitride
Isotypic heterojunction
Photocatalytic degradation
Simultaneous hydrogen evolution
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Summary:Fe-CN/NTE improved degradation of 4-NP coupled with simultaneous photocatalytic H2 evolution under visible light irradiation. [Display omitted] To achieve an efficient photocatalytic for clean energy production and environmental remediation, the highly active Fe-doped and terephthalaldehyde-modified carbon nitride (Fe-CN/NTE) isotypic heterojunction photocatalyst is constructed via a simple annealing method for degradation of organic pollutants with simultaneous resource recovery. The Fe-CN/NTE catalyst exhibits a 93% removal rate of p-nitrophenol (4-NP) and a 1.72 mmol/g H2 evolution rate in 2 h simultaneously under visible light irradiation, which are higher than those of pristine CN, Fe-CN, and NTE, respectively. Photoelectrochemical tests show that the excellent photocatalytic performance of Fe-CN/NTE comes from the improved migration, transportation, and separation of photoinduced charge carriers and expanded light-harvesting range. Moreover, hydroxyl radical (OH), electron (e−), and hole (h+) are the main active species and the rational mechanism of 4-NP photodegradation was proposed based on scavenger measurements and liquid chromatography-mass spectrometry (LC–MS), respectively. Isotypic heterojunction Fe-CN/NTE photocatalyst possesses excellent stability in the H2 evolution and 4-NP degradation during five-run cycle tests, posing as a promising candidate in practical works for organic pollution and energy challenges.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2021.01.011